tdd-java-demo

commit 8d9cfd9c2b8c4d54f7e917c2fa1f0f3607ab049d
parent b2544d8e8e77d4ab006bff4093d5c466569df03c
Author: Jul <jul@9o.is>
Date:   Wed, 31 Mar 2021 19:27:55 +0800

do not apply discount when multiple items are not met

Diffstat:
M
src/main/java/takehome/Discount.java
 | 
5
+++++
M
src/test/java/takehome/DiscountTest.java
 | 
24
++++++++++++++++++++++++

2 files changed, 29 insertions(+), 0 deletions(-)
diff --git a/src/main/java/takehome/Discount.java b/src/main/java/takehome/Discount.java
@@ -14,6 +14,11 @@ public class Discount {
         this.items.put(item, 1);
     }
 
+    public Discount(double amount, Map<Item, Integer> items) {
+        this.amount = amount;
+        this.items = items;
+    }
+
     public Item getItem() {
         return getSingleItem();
     }
diff --git a/src/test/java/takehome/DiscountTest.java b/src/test/java/takehome/DiscountTest.java
@@ -13,6 +13,10 @@ class DiscountTest {
     public static final Item APPLE = new Item("apple", 0.10);
     public static final Discount APPLE_DISCOUNT = createAppleDiscount();
 
+    public static final Item SOUP = new Item("soup", 0.65);
+    public static final Item BREAD = new Item("bread", 0.80);
+    public static final Discount SOUP_BREAD_DISCOUNT = createSoupBreadDiscount();
+
     @Test
     void getItem() {
         assertThat(APPLE_DISCOUNT.getItem(), is(APPLE));
@@ -41,13 +45,33 @@ class DiscountTest {
         assertThat(APPLE_DISCOUNT.getDiscount(basket), is(0.02));
     }
 
+    @Test
+    void multipleItemsNoDiscount() {
+        Basket basket = createBasketWithSoupBread(0, 0);
+        assertThat(SOUP_BREAD_DISCOUNT.getDiscount(basket), is(0d));
+    }
+
     private Basket createBasketWithApples(int amount) {
         Map<Item, Integer> amounts = new HashMap<>();
         amounts.put(APPLE, amount);
         return new Basket(amounts);
     }
 
+    private Basket createBasketWithSoupBread(int soupAmount, int breadAmount) {
+        Map<Item, Integer> amounts = new HashMap<>();
+        amounts.put(SOUP, soupAmount);
+        amounts.put(BREAD, breadAmount);
+        return new Basket(amounts);
+    }
+
     private static Discount createAppleDiscount() {
         return new Discount(0.01, APPLE);
     }
+
+    private static Discount createSoupBreadDiscount() {
+        Map<Item, Integer> items = new HashMap<>();
+        items.put(SOUP, 2);
+        items.put(BREAD, 1);
+        return new Discount(0.40, items);
+    }
 }
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